25 August 2017, 20:40 | #1 |
Registered User
Join Date: Aug 2004
Location:
Posts: 3,335
|
Utillity to decode MFM data
I'm looking for a program which can decode MFM-encoded data (e.g. raw track data read from a floppy disk). Is there anything like that for the Amiga? Maybe on some old utility compilation???
|
25 August 2017, 22:24 | #2 | |
Defendit numerus
Join Date: Mar 2017
Location: Crossing the Rubicon
Age: 53
Posts: 4,468
|
Quote:
(i've written some related code the last month) Or you need C source? Cheers, ross |
|
26 August 2017, 00:06 | #3 |
Zone Friend
Join Date: May 2006
Location: France
Posts: 1,801
|
IIRC Raw copy does that.
Kamelito |
26 August 2017, 00:58 | #4 |
Going nowhere
Join Date: Oct 2001
Location: United Kingdom
Age: 50
Posts: 8,986
|
Rawdic does, you have to pass decode parameters to it, its what every WHDload patcher uses to decode original disks.
|
26 August 2017, 13:28 | #5 |
Moderator
Join Date: Nov 2001
Location: Germany
Posts: 866
|
no sure what you search, but the wwarp package (http://whdload.de/whdload/WWarp128.lha) contains a mfm tool (with src) which calcs from from two longs (odd/even) the decoded value.
for larger chunks of data decoding depends on the organization of the data: odd first or even first and odd/first alternating or separated which is different for various disk formats |
26 August 2017, 14:32 | #6 |
Defendit numerus
Join Date: Mar 2017
Location: Crossing the Rubicon
Age: 53
Posts: 4,468
|
The MFM format is really simple but you need to sync somehow. Decoding data without knowing internals is relatively useless. If you format is unknown (or know but alien), and none of the available tools recognize it, you need to write your own.
And you need to study some source Cheers, ross |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Diskmaster Utillity | misguided_fool | request.Apps | 17 | 27 July 2019 14:12 |
How to decode ZX Spectrum and C64 fonts | Leandro Jardim | Retrogaming General Discussion | 4 | 04 July 2014 02:05 |
Optimising ILBM decode | pmc | Coders. Asm / Hardware | 21 | 12 October 2011 20:24 |
Blitter MFM decoding | Photon | Coders. General | 14 | 16 March 2006 11:24 |
Winuae+IPF > MFM > Floppy | killergorilla | project.SPS (was CAPS) | 1 | 14 July 2004 13:04 |
|
|